公开(公告)号：KR1020100135137A

公开(公告)日：2010-12-24

申请号：KR1020090053619

申请日：2009-06-16

Applicant: 서울대학교산학협력단 ,  포항공과대학교 산학협력단

Inventor： 이대붕 ,  송황준

IPC: H04N7/173

CPC classification number: H04N7/17318 ,  H04N21/4345 ,  H04N21/43637 ,  H04N21/4384 ,  H04N21/4622 ,  H04N21/64315

Abstract: PURPOSE: A method and an apparatus for controlling a channel to provide an internet protocol television service are provided to control a type of each channel and a bit rate of image data transmitted through each channel, thereby reducing channel change delay time. CONSTITUTION: A cost calculating unit(520) calculates costs which is the sum of average distortion values of image data transmitted through each channel. A bit rate calculating unit(530) calculates a bit rate of the image data transmitted through each channel according to each determined channel state vector. An optimal solution determining unit(540) determines a channel state vector with the minimized costs as an optimal state vector.

Abstract translation: 目的：提供一种用于控制提供互联网协议电视服务的频道的方法和装置，以控制每个频道的类型和通过每个频道发送的图像数据的比特率，从而减少频道切换延迟时间。 构成：成本计算单元（520）计算作为通过每个通道发送的图像数据的平均失真值之和的成本。 比特率计算单元（530）根据每个确定的信道状态向量计算通过每个信道发送的图像数据的比特率。 最优解确定单元（540）将具有最小成本的信道状态向量确定为最优状态向量。

公开(公告)号：KR1020100097829A

公开(公告)日：2010-09-06

申请号：KR1020090016680

申请日：2009-02-27

Applicant: 포항공과대학교 산학협력단

Inventor： 송황준 ,  이대붕 ,  이경철 ,  한상천 ,  안기진

IPC: H04L12/851 ,  H04W28/02 ,  H04W40/00 ,  H04W84/18

CPC classification number: H04W28/14 ,  H04W28/0284 ,  H04W40/02 ,  H04W84/18

Abstract: PURPOSE: A method for transmitting data over a mobile ad hoc network and a recorded medium for performing the method for transmitting data over the mobile ad hoc network are provided to secure the service quality of data sensitive to delay by maximally satisfying an inter-end transmission delay time. CONSTITUTION: If an intermediate node is placed at a first hop, the intermediate node determines the priority of a received packet based on inter-end whole hop number and allowable maximum delay(340,350). If the intermediate node is placed at a kth hop, the intermediate node determines a packet priority for a various hope as well as a packet priority based on a packet urgent level in a current(360). If the priorities of both a newly received packet and cue-standby packets are determined, the intermediate node transmits the packet according to the higher priority(380).

Abstract translation: 目的：提供一种通过移动自组织网络和记录介质发送数据的方法，用于执行通过移动自组织网络发送数据的方法，以通过最大限度地满足中间传输来确保对延迟敏感的数据的服务质量 延迟时间。 构成：如果中间节点置于第一跳，则中间节点根据中间全跳数和允许的最大延迟（340,350）确定接收到的分组的优先级。 如果中间节点被放置在第k跳，则中间节点基于当前（360）中的分组紧急级别，确定各种希望的分组优先级以及分组优先级。 如果确定新收到的报文和报文备份报文的优先级，则中间节点根据较高的优先级发送报文（380）。

公开(公告)号：KR100874094B1

公开(公告)日：2008-12-16

申请号：KR1020070076279

申请日：2007-07-30

Applicant: 포항공과대학교 산학협력단

Inventor： 송황준 ,  이대붕 ,  주현철

IPC: H04L12/28

Abstract: An IPTV service providing server and a method thereof are provided to reflect user's preference for channels when deciding the type of each channel and the number of additional intra-frames which will be inserted into video data to be transmitted. An IPTV service providing method comprises the following steps of: determining the type of each channel to be provided to a user and the number of additional intra-frames to be inserted into video data which is provided through the channels(100); inserting the additional intra-frames into the video data, and then encoding the video data(110); and transmitting the video data to a corresponding router according to the determined channel type(120).

Abstract translation: 提供一种IPTV服务提供服务器及其方法，用于在决定每个频道的类型和插入到要发送的视频数据中的附加帧内数量时反映用户对频道的偏好。 IPTV服务提供方法包括以下步骤：确定要提供给用户的每个频道的类型和要插入到通过频道（100）提供的视频数据中的附加帧内数量; 将附加的帧内插入到视频数据中，然后对视频数据进行编码（110）; 以及根据确定的信道类型（120）将视频数据发送到对应的路由器。

公开(公告)号：KR1020080048696A

公开(公告)日：2008-06-03

申请号：KR1020060118983

申请日：2006-11-29

Applicant: 한국전자통신연구원 ,  포항공과대학교 산학협력단

Inventor： 권은정 ,  권오형 ,  이수인 ,  송황준 ,  이대붕 ,  주현철

IPC: H04N7/10 ,  H04L12/28 ,  H04L12/20 ,  H04L29/06

CPC classification number: H04N21/2385 ,  H04H20/78 ,  H04L29/06 ,  H04N21/235 ,  H04N21/4384 ,  H04N21/6118

Abstract: A CATV(Cable Television) network system having an IPTV(Internet Protocol TV) service providing function and a method thereof are provided to supply the IPTV service without channel change delay in consideration of a DOCSIS protocol as an MAC protocol of a CATV network, thereby supporting smooth channel change of a user and efficiently using an uplink band. A cable modem termination system(61) receives all channel data from a broadcasting server, and integrates a bandwidth of a broadcasting service with a bandwidth of a communication service. The cable modem termination system provides channel data, requested from a cable modem(62), without channel change delay based on a hierarchy structure of a DOCSIS(Data Over Cable Service Interface Specifications) protocol extension stack as an MAC(Media Access Control) protocol of a CATV network. The plural cable modems request the specific channel data to the cable modem termination system, and receives the channel data.

Abstract translation: 提供具有IPTV（因特网协议电视）服务提供功能的CATV（有线电视）网络系统及其方法，以便考虑到作为CATV网络的MAC协议的DOCSIS协议来提供没有信道改变延迟的IPTV服务，从而 支持用户的平滑信道改变并有效地使用上行链路频带。 电缆调制解调器终端系统（61）从广播服务器接收所有信道数据，并且将广播业务的带宽与通信业务的带宽相集成。 电缆调制解调器终端系统提供从电缆调制解调器（62）请求的信道数据，而不需要基于DOCSIS（Data Over Cable Service Interface Specifications，数据到电缆业务接口规范）协议扩展堆栈的层次结构作为MAC（媒体访问控制）协议 的CATV网络。 多个电缆调制解调器请求具体的信道数据到电缆调制解调器终端系统，并接收频道数据。